UH so I have a lot of potential charas I'd love to bring in, it all depends on how much I can spare time for the 4th wall and how often I can be around, but there are some I'm definitely throwing in (Ace from OP, probably Pietro from AoU, Gwaine from Merlin unless I manage to miraculously app him before that), but!
My muselist is here, so if anyone has any particular character requests to make re: who to bring in, please let me know! It's more fun that way, after all.
also not on the list but I've considered bringing Henry from OUAT just for this event unless we find someone else to bring him in, bc I should rewatch for that...